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An effect of microstructure on the interface resistance between a perovskite-type oxide electrode and yttria-stabilized zirconia

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Abstract

The electrode characteristics of perovskite-type oxides, La0.6Sr0.4CoO3 and La0.6Sr0.4MnO3, on ceria-based oxide and stabilized zirconia were analysed by the a.c. impedance method. The ionic conductivities of the electrolyte and electrode conductivities from the a.c. impedance analysis agreed with those obtained from the current interruption and d.c. four-probe methods. Two semicircles from the charge transfer and diffusion processes appeared as the electrode resistance. The relative contribution of these two processes to the overall electrode resistance strongly depended on the microstructure of the electrode. The electrode microstructure could be controlled by the dispersion medium used for the electrode slurry. The La0.6Sr0.4MnO3 electrode coated with n-butyl acetate slurry exhibited the smallest electrode resistance.

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Authors and Affiliations

  1. Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, 816, Fukuoka, Japan

    Takanori Inoue, Keiichiro Hoashi, Koichi Eguchi & Hiromichi Arai

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  1. Takanori Inoue
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  2. Keiichiro Hoashi
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  3. Koichi Eguchi
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  4. Hiromichi Arai
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Inoue, T., Hoashi, K., Eguchi, K. et al. An effect of microstructure on the interface resistance between a perovskite-type oxide electrode and yttria-stabilized zirconia. Journal of Materials Science 28, 1532–1536 (1993). https://doi.org/10.1007/BF00363344

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  • DOI: https://doi.org/10.1007/BF00363344

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